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Original question:

BOOSTXL-POSMGR: T-format encoder functions and communication protocol

BOOSTXL-POSMGR: T-format encoder functions

Johnson Alanl
Intellectual 265 points

Part Number: BOOSTXL-POSMGR

Hi，Lori

I'm still a little confused about the tformat code, as shown below (in the red box) :

Because , where the red part is CF field, but why the green part is 1, where is the Tamagawa protocol specified?

In addition, if I use nikon protocol and the instruction format is as follows, how can I modify the code to form the CF field of instruction ID1 (0 010 00 000 10000 000 1) :

Best regards

Johnson Alanl

  • +1
    TI__Guru* 93800 points

    Johnson,

    I'm looking into this and will respond tomorrow.  The t-format specification details are described in documentation for the encoder available from Tamagawa.  

    Best Regards

    Lori

  • 0 in reply to Lori Heustess
    Intellectual 265 points

    Lori,

    I am looking forward to your reply.

    Best Regards

    Johnson Alanl

  • 0 in reply to Johnson Alanl
    TI__Guru* 93800 points
    Johnson Alanl said:
    Because , where the red part is CF field, but why the green part is 1, where is the Tamagawa protocol specified?

    Johnson,

    The CF field consists of a START, SINC CODE, IDCODE + PARITY.  Then the line goes high (IDLE). The 1's you show in green are correspond to IDLE.

    • The IDCODE values can be found in the tformat library .h file.  These include the parity.
    • START is always 0
    • The SINK CODE is always 010
    • IDLE is 1

    Thus, the line of code is adding on an initial IDLE (1) + START (0) + Sink (010) to the front of the IDCODE and IDLE (111...) to the end.

    I think from this information you will be able to modify your Nikon CF.

    Regards

    Lori